Multiple punching-machine.



No. 741,181-, PATENTED 00T. 13. .1,903.- J.' s. STBVENSON. MULTIPLEPUNGHING MACHINE.

` APVPLIOATION FILED NOV. 6.1902. 0 MODEL.' 2 SHEETSj-SHBET 1.'.

Ng 741,181. l BATENTED 00,113,1903.

J. s. ,smv-msnm. MULTIPLBPUNGHNG MACHINE.

APPLICATION FILED N0`V.6,1902. Y NO MODEL.

2 SHEBTSQSHBBT 2.

NTTED STATES Patented october 1a, 190e;

PATENT Tricia.

JOHN S. STEVENSON, OF DETROIT, MICHIGAN, ASSIGNOR TO AMERICAN CAR daFOUNDRY COMPANY, OF ST. LOUIS, MISSOURI, A CORPORATION OF NEW JERSEY.

SPECIFICATION forming part of Letters Patent No. 741,181, dated October13, 1903?.

Application filed November 6, 1902. Serial No. 130,265. (No model.)

To @ZZ whom it may concern:

Be it known that I, JOHN S. STEvENsoN, a citizen of the UnitedStates,residing at the city of Detroit, county of Wayne, State ofMichigan, have invented a certain new and useful Improvement, inlMultiple Punching-Machines, of which the following is a full, clear,and exact description, such as will enable others skilled in the art toWhichit appertains lo to make and use the same, reference being had tothe accompanying drawings, forming part of this specification, in which-Fignre l is a plan view of the bed of the machine. Fig. 2 is a brokenfront elevational view. Fig. 3 is a side view of the gap of the machine.Fig. 4. is a View similar to Fig. 8, partly in section, to betterillustrate details of construction. Fig. 5 is a sectional view on line 55 of Fig. 2,` and Fig. 6 is a detached zo view showing details ofconstruction.

This invention relates to a certain new and useful improvement inmultiple punchingmachines.

The object of .this invention is to produce z 5 a power-controlledmultiple punching-machine in which a portion of the punches is held inrelatively fixed position and the companion punches are movablelongitudinally across a portion of the machine, movement 3o of thepunches at opposite sides being synchronized so as to insure uniformspacing of the same from a central point, said parts b eing adjusted toscales which determine the amount of movement thereof and moved by meansof a suitable motor connected directly to the driving-gears.

To that end the present invention consists of the features ofconstruction and arrangement of parts, all as hereinafter fully de- 4oscribed, and specifically pointed out in the claims.

Referring to the drawings, A represents a broken portion of the frame ofa power-punch with only that portion thereof surrounding the gap beingshown, as it is only that portion of the machine with which my inventioncooperates. i

B represents the lower portion of the frame,

C the upper portion, and D the yokes at the ends, which yokes areintegral with the frame of the machine.

Resting upon the lower portion of the frame are bed-blocks l, 2, and 3,the blocks l and 2 being movable longitudinally and the block 3 beingheld iirmly in the central portion of the length of said bed portion ofthe frame by means of the bolt ct passing through the bed into saidblock 3. Coincident with said blocks l, 2, and 3 and above the same arethe slidable head-blocks 4, 5, and 6,1'espectively, which are carried onthe vertically-movable head-piece 7, the blocks l, 2, and 3 being heldin position in the bed by the dovetail section b iitting in acorresponding channel in said bed and the blocks 4, 5, and 6 being alsoprovided with dovetail portion c fitting in a similar channel in thehead,\to.which head is imparted reciprocatory motion for the punchingoperation in the usual manner characteristic of this class of machinesand being Well understood will not be described in detail. Secured inlike 4manner to the upper face of blocks l, 2, and 3 and the lower faceof blocks 4., 5, and are slidable blocks 8 and 9, which carry,respectively, the female members 10 and the male members 1l of the punchproper, and it is to secure proper positioning of these members that issought by the present invention by power-operated. means characteristicof this machine in contradistinction to the manually-operated machineshown and described in the applica--a tion for'patent for'multiplepunching-machine iiled herewith. To that end the blocks l 2 and 4. 5 areprovided with the said dovetailed extensions, through which are'projected screw-threaded openings e, through which openings pass thescrew-threaded shaft portions ff and g g', respectively on the lower andupper sides of the gap of the machine, Which shafts engage said slidableblocks and will cause the said blocks to move in a direction away fromor toward the central portion of the machine, carrying with them thepunches in either or both directions at the Will of the operator.

As it is important that the male and female members of the punch shallbe in eXact block.

coincidence to properly perform their function, it is important thatwhen once set when one member is moved in either direction the opposingmember shall be moved an equal distance in the opposite direction. Thismovement is primarily imparted to the movable parts from the motor 12,which is conventionally illustrated and may be of any suitable type,though an air-motor is preferred, which is connected to any suitablesource of compressed-air supply. (Not shown.) Upon the shaft of themotor 12 is a pinion 13, meshing with a gear 14 on the shaft 15, onwhich shaft is another pinion 16, (shown in dotted lines in Fig. 3,)with which meshes the gear 17 on the shaft 18. On the said shaft 18 is abevel-gear 19, beyond which the shaft extends to form the screw-threadedportion f, before referred to, which passes through the blocks l 2, inblock 3 there being no screwthread and in block 2 the threaded portionfbeing reversed. In mesh with bevel-gear 19 is a bevel-gear 2O on thevertical shaft 21, while at the opposite end of said shaft is abevel-gear 22, meshing with the bevel-gear 23 on the screw-threadedshaft g, which latter connects with the female screw of the block 4,passes through the block 6, in which there is no screw-thread, andthrough block 5, in which the thread g is reversed. Upon the end g is abevel-gear 24, meshing with bevel-gear 25 on the vertical shaft 26, uponthe opposite end of which is the bevel-gear 27, meshing with thebevel-gear 28 on the end f ofthe lower shaft. Thus it will be seen thatupon rotation of the motor shaft and pinion 13 the whole train ofgearing and the shafts having the screw-threaded portions j', f', g, andg will be operated, and through the screw-threaded connection of thelatter with the blocks 1, 2, 4, and 5 said blocks 1 will be adjustednearer to or away from the therewith.

The particular application of the machine i as invented by me has beento the punching of sheet-metal parts, such as sills, used in theconstruction of metallic railway-cars, and it j will be found especiallyapplicable to that:

class of Work or in any style of metallic structures in which precisionand variation of punching are required.

It will be apparent that the punches are' capable of separate aswell assimultaneous adjustment, which is readilyaccomplished by loosening thenuts 32 upon the bolts 33, the

heads 34 of which travel in the longitudinal l slots 35, whereby anysingle punch may be shifted to a new position upon its respective Itwill also be apparent that While I have only illustrated four punches,two of which are fixed and two movable, a larger number, proportioned tothe capacity of the machine, may be used to advantage, some of which maybe capable of movement across the bed of the machine and others held inrelatively Iixed position, or the whole series may be movable, ifdesired, all of which will be within the spirit of my invention.

I am also-aware that minor changes in the construction, arrangement, andcombination of the several parts of `my machine may be made andsubstituted for those herein shown and described without in the leastdeparting from the nature and principle of my invention.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

l. In a machine of the described character, a plurality of relativelymovable members carrying punch members, a Xed member carrying punchmembers coperating therewith, and a screw-threaded shaft extendinglongitudinally through said movable members for moving saidpunch-carrying members; substantially as described.

2. In a machine of the described character, a head-block, a plurality ofpunch-carrying meansin alinement therein, punches separately movabletherein, and connected, parallel, screw-threaded means for moving saidpunch-carrying means substantially as described.

3. In a machine of the described character, a plurality ofpunch-carrying means, punches capable of separate lateral adjustmenttherein, and connected, parallel, screw-threaded means for moving saidcarrying means in the line of said movement; substantially as described.

4. In a machine of the described character, a plurality ofpunch-,carrying means, and parallel screw-threaded shafts for adjustingthe same, and for insuring synchronous uniform lateral movement of themale and female punch members carried thereby; Substantially asdescribed.

5. In a machine of the described character, a plurality of punchmembers, some of which are centrally disposed and some of which are ateach side of said central members, and connected, screw-threaded meansextending therethrough for simultaneously adjusting the position of someof said members without disturbing the central members; substantially asdescribed.

6. In a machine of the described character, a plurality of punch membersarranged upon opposite sides of a gap, movable supports therefor, andscrew threaded, connected means engaging therewith, for causingsynchronous lateral movement of some of said punch members on one sideof said gap with relation to others on the lsame side of said gap;substantially as described.

7. In a machine of the described character,l a plurality of punchmembers arranged upon opposite sides of a gap, slidable supports IOO IIO

Ipo

bers on each side of said gap with relation to relatively ixed punchmembers located therebetween on the same side of the gap; substantiallyas described.

In testimony whereof I hereunto aiix my signature, in the presence oftwo Witnesses, this 29th day of October, 1902.

JOHN S. STEVENSON.

Witnesses:

ANTON EKsTRoM, ARTHUR F. BIGGAR.

